package com.example.tmxk.selvlet;

import com.example.tmxk.bean.NewsBean;
import com.example.tmxk.dao.NewsDao;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;

/**
 * 1.接收post网址 /newsAdd.jsp
 * 2.接收到传递过来的新闻参数 新闻标题 新闻内容
 * 3.完成新闻的添加
 * 4.跳转到其他页面
 */
@WebServlet("/newsAdd.jsp")
public class NewsAddServlet extends HttpServlet {
    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        req.setCharacterEncoding("UTF-8");
        //会话中获取管理员昵称
        String user = (String) req.getSession().getAttribute("user");//获取会话
        if (user == null || user.equals("")) {
            resp.sendRedirect("login.jsp");//没登录 跳转到登录页面
            return;
        }
        String newsTitle = req.getParameter("NewsTitle");
        String newsContent = req.getParameter("NewsContent");
        NewsBean newsBean = new NewsBean();//实例化新闻对象
        newsBean.setNewsTitle(newsTitle);//设置新闻标题
        newsBean.setNewsContent(newsContent);//设置新闻内容
        newsBean.setAdminName(user);
        NewsDao newsDao = new NewsDao();//实例化 新闻DAO
        int result = newsDao.add(newsBean);//调用添加方法 传递新闻对象
        // 在Servlet中调用使用网址跳转 请求结果对象
        if(result>0){
            resp.sendRedirect("news.jsp");
        }else {
            req.getRequestDispatcher("WEB-INF/error.jsp").forward(req,resp);
        }
    }
}
